The tranny needs to be supported on the frame, so I bent a piece of 1/4" X 2" steel angle iron to the required angle to screw to the top 3 bell housing mounting screws, and terminate flush to the frame members.
I cut out two shorter angles, and screwed them to the tranny mounting angle at both ends. I welded a nut on the rear of the short angles so the 3/8-16 bolts would have a real nut to screw through.The two small angles were then welded to the frame. The extra drive shaft was cut off to keep the electric motor from needing a thick spacer when mounted to the remaining screws in the bell housing. The clutch plate will be my final drive attachment to the motor shaft, so I needed a disk to make the final connection to the drive motor. I had some circular saw blanks, and will see if I can make it work with a bit of machining and welding.